Fog fire nozzle



July 25, 1961 H. w. BADBERG 2,993,650

FOG FIRE NOZZLE Filed June 11, 1959 2 Sheets-Sheet 1 FIG. I

llll

INVEN TOR.

HENRY W. BADBERG July 25, 1961 H. w. BADBERG 2,993,650

FOG FIRE NOZZLE Filed June 11, 1959 2 Sheets-Sheet 2 FIG. 5

INVENTOR.

HENRY W. BADBERG 2,993,650 FOG FIRE NOZZLE Henry W. Badherg, 2641 S.15th St., Lincoln, Nebr. Filed June 11, 1959, Ser. No. 819,683 1 Claim.(Cl. 239-271) This invention relates to fire fighting nozzles adaptedfor use in combination with a fire hose or the like and moreparticularly to a fog producing nozzle.

A primary object of this invention is to provide a fog nozzle of thetype described capable of penetrating walls, ceilings, floors, doors andthe like to place the water fog closer to the fire for more effectivelycombating the fire.

A further object is to provide a fire fighting fog nozzle having aparticular water outlet passage arrangement for providing a moreeffective fog pattern.

Another object is to provide a fog nozzle having, in combination,adjustable means whereby the operator may selectively control and directthe fog pattern.

Yet another object of the present invention is to provide a fog nozzleof the character described readily capable of being extended in lengthas the situation demands.

Still another object is to provide a fire fighting fog nozzle especiallyuseful on enclosed fires such as fires in haystacks, rubbish piles, coalpiles and other such compacted materials.

Another object of the present invention is to provide a fog nozzle ofthe character described which is economical of manufacture, simple andefiicient in operation and of rugged and durable construction.

Other and further objects and advantages of the invention will beunderstood from the following detailed description thereof.

FIG. 1 is a side elevational view of the assembled fog fire nozzle ofthis invention with some parts broken away and other parts shown insection for clarity of illustration;

FIG. 2 is an exploded side view of the component parts of the invention;

FIG. 3 is a side view on a reduced scale of the assembled nozzle in anextended operating position as attached to a fire hose and with the headpenetrating a building wall, some parts being broken away for clarity ofillustration;

FIG. 4 is a front elevational view on an enlargedscale of the head ofthe nozzle;

FIG. 5 is a longitudinal cross sectional view on an enlarged scale ofthe head taken along the line 5-5 of FIG. 4; and

FIG. 6 is a longitudinal cross sectional view on an enlarged scale ofthe head taken along the line 66 of FIG. 4.

While one embodiment of the invention is illustrated in theabove-referred-to drawings, it is to be understood that they are merelyfor the purpose of illustration and that various changes in constructionmay be resorted to in the course of manufacture in order that theinvention may be utilized to the best advantage according tocircumstances which may arise, without in any manner departing from thespirit and intention of the device, which is to be limited only inaccordance with the appended claims. And while there is stated theprimary field of utility of the invention, it remains obvious that itmay be employed in any other capacity wherein it may be foundapplicable.

The fog nozzle 10 of this invention generally comprises a head 12positioned at the forward end of an elongated tubular shaft or tube 14,a shut-off valve 16 having its outlet side threadedly secured at therearward end of the nited StatesPatent ice shaft 14, coupling "18extended from the inlet side of the valve 16, a baffle sleeve 20disposed about the forward end of the tube 14 and adapted to be slidablypositioned therealong, brackets 22 and 24 extending from the tube 14 forsupporting an auxiliary tubular shaft or tube 26 which later may beemployed to extend the length of the nozzle assembly at desired timesand a reducer coupling 28 which may be threaded into the coupling 18 atdesired times to connect the nozzle to a conduit of larger diameter.

The head 12 has a cylindrical body portion 30 and a spear point 32 ofconical shape formed integral with and extended from the forward end ofthe body portion 30.

The base 34 of the point 32 is of larger diameter than that of the bodyportion 30 and the peripheral surface of the base portion 34 is formedwith flattened surfaces and appears in hexagonal shape in cross sectionor in front view as best seen in FIG. 4 for accepting a wrench thereon.

A threaded stem or nipple 36 of reduced diameter extends from the rearend of the body portion 30 and is secured in the internally threadedforward end 31 of the tubular tube 14.

An O-ring gasket 38 is disposed about the stem 36 and positioned betweenthe opposed vertical faces of the rear end of the body portion 30 andthe forward end of the tube 14 to provide a water tight seal upontightening the connection between the head and tube.

The baffie sleeve 20 is of substantially a hollow cylindrical shapehaving a first bore 40 of a diameter complemental to the outer diameterof the shaft 14 and a second bore 42 of greater diameter and ofsubstantial length extending inwardly from the forward end of the sleeve20.

The second bore 42 is of sufficient diameter greater than the base 34 ofthe point 32 of the head 12 so as to freely pass thereover when thesleeve 20 is moved forwardly on the shaft. At this point it will benoted that the outer diameter of both the body portion 30 of the head 12and the shaft 14 are equal whereby the sleeve 20 may be moved along theshaft from a position rearwardly of the head as shown in FIG. 4 to aposition substantially covering the head 1'2 as shown in FIG. 1 or itcan be moved further forwardly about the head whereby the second bore 42extends beyond the base 34 of the point 32.

An annular recess 44 is provided adjacent the rearward end of the firstbore 40. An O-ring gasket 46 is positioned in the recess 44 and engagesagainst the surface of the shaft 14 and provides a watertight seal atthe rearward end of the sleeve.

The exterior surface of the sleeve 20 is provided with a raised portion48 extending thereabout and positioned intermediate the ends of thesleeve 20. The raised portion 48 serves as a hand grip to facilitatesliding of the sleeve along the shaft 14 manually. Thesurface of thegrip may be knurled if desired. r

The rearward end of the tubular shaft 14 is exteriorly threaded forconnection to the outlet side 50 of the shutoff valve 16. The valve 16is provided with a hand lever 52 attached to an extended end of a valvestem 54 b welding 56 or the like.

The coupling 18 is secured in the inlet side 58 of the valve 16 and asshown in FIG. 3, through the coupling 18, the nozzle 10 is connected toa fire hose' 60.

The auxiliary tubular shaft 26 is of the same diametric dimensions asthe shaft 14 and has an interiorly threaded forward end 61 similar tothe forward end of the shaft.

14 as disclosed in FIG. 2.

The rearward end of the auxiliary shaft 26 has a reduced threaded stem62 adapted to be received in the forward end of the shaft 14 at desiredtimes.

The stem 62 has an O-ring gasket 64 positioned thereon providing awatertight seal between the facing surfaces of the respective ends ofthe shafts at times when they are joined.

When not in use, the auxiliary shaft 26 is held in storage positionparallel to and spaced from the shaft 14, being supported in thebrackets 22 and 24.

The brackets 22 and 24 are in the form of lugs or ears and theforwardmost bracket 22 is positioned on the shaft 14 at a point spacedrearwardly of the forward end of the shaft 14 and at a distance from theend to allow clearance for sufficient forward and rearward movement ofthe baffle sleeve 20 over or away from the head 12.

The bracket 22 extends outwardly from the shaft 14 at a right anglethereto and its lower end is secured to the surface of the shaft 14 bywelding 66.

The bracket 22 further has an aperture 68 extending through the outerend thereof which is of a diameter complemental to the outside diameterof the shaft 26.

The rearward bracket 24 is fixed to the shaft 14 in a manner similar tothe forward bracket 22 and is secured to the shaft by welding. 70 and ata point adjacent the threaded rearward end of the shaft 14.

The bracket 24 is also provided with an aperture 72 axially aligned withaperture 68 in the forward bracket 22. However, the aperture 72 isinteriorly threaded and of a size to threadedly receive the stem 62 atthe rear end of the auxiliary shaft 26.

Therefore to place the auxiliary shaft 26 in storage position the shaftis passed, stern first, through the aperture 68 in the forward bracket22 and moved rearwardly so that the stem 62 may be threadedly engaged inthe aperture 72 of the rearward bracket 24.

It will be seen that the head has a plurality of regularly spacedoutlets 74 opening upon the surface thereof. With particular referenceto FIGURES 4, and 6 wherein the interior construction of the head isshown in detail, it will be seen that the head has a central bore 76opening upon the rearward end thereof and its forward end terminating ata point interiorly of the point 32. The bore 76 is of a diametercomplemental to the inside diameters of either of the tubular shafts 14or 26.

The outlets 74 provide communication from the bore 76 to the exteriorthrough passageways 78 which later are disposed at various angles.

The'passageways can be separated into two distinct patterns or sets, onepattern being shown in FIG. 5 and the other pattern being shown in FIG.6.

The passageways 78 of each pattern extend radially outwardly of the bore76 at equally spaced distances therearound.

Each set of passageways 78 are staggered at a 45 angle from the axis ofthe bore 78 whereby each pattern is repeated four times.

The particular passageway patterns are important to the extent that theyprovide an improved fog producing nozzle. Water under pressure entersthe bore 78 and is forced outwardly of the passages in small streams.The passageways are so inclined as to cause the intersection of thestreams at points spaced from the surface of the head to further atomizethe water producing a more effective and heat absorbent fog. The anglesof the passageways are indicated in FIGURES 5 and 6 wherein thelongitudinal centerline of the bore 76 is represented by line 80.

The passageway angles that I have found to be most effective are asfollows, beginning with those disposed adjacent the rear end of the headand moving forwardly: A, forwardly at 45; B, rearwardly at 45; C,forwardly at 45"; D, outwardly at 90; E, forwardly at F, forwardly at55; and in the second pattern shown in FIG- URE '6, G, forwardly at 55;H, rearwardly at 45; 1,

4 forwardly at 3', outwardly at 90; K, forwardly at 20; and L, forwardlyat 70.

It is to be understood that each of the opposed passageways of eachpattern are disposed in the respective angles indicated.

The nozzle is shown assembled for operation in FIG. 3 with a fire hoseor other suitable fluid supply line connected to the coupling 18 of thenozzle. The valve lever 52 may then be actuated to pass fluid throughthe valve 16 into the tubular shafts 14 and 26 and out the passagewaysin the head 12. As shown, the head 12 has been manually driven through awall or the like 200 such action facilitated by the conical shaped point32, the fog being dispersed into the fire area which at times isconcentrated between the outer and inner walls or the ceiling and roofof a building or the like.

In FIG. 3, the device is shown fully extended; that is, the auxiliarytubular shaft has been inserted between the forward end of shaft 14 andthe head 12. If the extended length is not desired the valve may be shutdown whereupon the head 12 may be unscrewed from the forward end of theauxiliary shaft 26, and the auxiliary shaft 26 unscrewed from theforward end of the shaft 14 whereby the head may then be screwed intothe end of the shaft 14.

The auxiliary shaft 26 may then be passed through the aperture 68 in theforward storage bracket 22 of the main shaft 14- and its threaded end 62screwed into the threaded aperture 72 of the rearward bracket 24 therebylocking it in its storage position preventing its loss and placing it inposition for immediate use if extended length is required.

In the operation shown in FIG. 3, the baffie sleeve 20 is not employed.However, in use of the nozzle on open or accessible fires and the likethe sleeve 20 may be manually moved along the shaft 14 or 26 and overthe body portion of the head to provide forward directional control ofthe spray and fog. It is to be understood that the sleeve can be movedforward sufiiciently to allow the forward or second bore 42 thereof topass over the base 34 of the point 32 and cover a substantial area aboutthe point 32 of the head 12 to produce a substantially concentratedstream.

From the foregoing specification, it will become apparent that theinvention disclosed will adequately accomplish the functions for whichit has been designed and in an economical manner, and that itssimplicity, accuracy, and ease of operation are such as to provide arelatively inexpensive device, considering what it will accomplish, andthat it will find an important place in the art to which it appertainswhen once placed on the market.

It is thought that persons skilled in the art to which the inventionrelates will be able to obtain a clear understanding of the inventionafter considering the description in connection with the drawings.Therefore a more lengthy description is regarded as unnecessary.

Changes in shape, size and arrangement of details and parts such as comewithin the purview of the invention claimed may be resorted to in actualpractice, if desired.

I claim:

In a fog producing fire hose nozzle, the combination which comprises anelongated tube, said tube being threaded externally on one end andinternally in the opposite end, a sleeve slidably mounted on the tube,and a head including a perforated cylindrical body with an elongatedperforated cone extended from one end and a threaded nipple extendedfrom the opposite end, and formed to be received in the internallythreaded end of said elongated tube, said sleeve being positionedwhereby one end thereof provides a cover for some of the perforations ofthe cylindrical body, the perforations of the cylindrical body and conebeing radially disposed and positioned in pairs, and the perforations ofthe pairs being inclined longitudinally whereby water sprayed from 6 aone perforation of a pair impinges upon water sprayed 2,246,797 GaddesJune 24, 1941 from the other perforation of the pair atomizing the wa-2,647,800 Burnam et a1. Aug. 4, 1953 ter and producing fog. 2,792,257Davis May 14, 1957 2,813,753 Roberts Nov. 19, 1957 References Clted 1nthe file of this patent 5 UNITED STATES PATENTS FOREIGN PATENTS1,644,290 Titcomb et a1. Oct. 4, 1927 4 ,1 Great Br pr. 1 1 7

